20760

Appears in sequences

• Numbers that are the sum of 5 positive 7th powers.at n=30A003372
• McKay-Thompson series of class 5a for Monster.at n=29A007253
• If i < n, j < n, p/a(i) < q/a(j), then there exists k with p/a(i) < k/a(n) < q/a(j).at n=9A009589
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 12.at n=24A031690
• Numbers k such that d(phi(k)) = phi(d(k)), where d=A000005 and phi=A000010.at n=34A078148
• Irreducible polynomial coefficient of singular value associated with sqrt(2n).at n=25A078878
• Triangle of 3-Narayana numbers, N(n,k), for n >= 1, 0 <= k <= 2n-2.at n=29A087647
• Triangle of 3-Narayana numbers, N(n,k), for n >= 1, 0 <= k <= 2n-2.at n=31A087647
• Short leg of primitive Pythagorean triangles having legs that add up to a square, sorted on hypotenuse.at n=25A089547
• a(n) = 36*n^2 + n.at n=23A157324
• a(n) = 1728*n + 24.at n=11A157325
• 144n^2 + 2n.at n=11A158132
• a(n) = 576*n^2 + 24.at n=6A158637
• a(n) = n*(n^3 + 2).at n=12A185065
• Numbers k such that (2^k - k)*2^k + 1 is prime.at n=14A200816
• Index of A190874 at record terms.at n=11A202187
• Quadruples (a,b,c,d) of the form ( n*(n^3-1), n^3-1, 2*n^3+1, n*(n^3+2) ).at n=47A204767
• Number of partitions of n such that (number parts having multiplicity 1) is not a part and (number of 1s) is a part.at n=48A241507
• Numbers k such that 4*10^k - 89 is prime.at n=17A290475
• Numbers k for which rank of the elliptic curve y^2=x^3-k*x is 4.at n=14A309034